o-hydroxyacetophenones with 2 equivalents of arylaldehydes provides 2-aryl-3-(arylmethyl)chromones (a chimera of flavone and homoisoflavanone) in MeOH at 50 °C under mild conditions. The uses of various bases and solvents are investigated for one-pot facile and efficient transformation. A plausible mechanism is proposed.
邻位羟基
苯乙酮与2当量芳基醛的
氢氧化钠控制的分子间双羟醛缩合反应可在温和条件下于MeOH中于50°C的条件下提供2-芳基-3-(芳基甲基)
色酮(
黄酮和均
异黄烷酮的嵌合体)。研究了各种碱和溶剂的使用,以实现一锅式便捷高效转化。提出了一个合理的机制。